Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to unknonwn correspondent 'The advertisement rates for our weekly insertions in the [Times?] appear to be much higher for the period Oct. 30th to Dec. 1917 (a/c with us) than for the preceding period. Kindly report whether there has been an increase [of rates of the Times?] and when, if so, it began.' 05 March 1918